This is a prototype of an 813 amplifier made from parts in the junk box. These two fire bottles put out about 700 watts. This version covers only 40 meters but bandswitching could easily be used to cover other bands. My Amplifiers usually oscillate and my Oscillators usually do nothing, but this amp worked well.

!!!CAUTION!!! This is open-frame construction and can be very dangerous to operate. Do not operate equipment like this unless you know what you are doing. One instant of inattention could cost you your life. This is the companion homebrew power supply.